Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 76, NWS Philadelphia/Mount Holly

June 1, 2011Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 2011, 12:56 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 1, 2011, 12:56 PM EDT (16:56 UTC)
Expired
Jun 1, 2011, 1:56 PM EDT
In force
60 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 124 km from the middle of the area, began a volume at 16:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.9 hours before the alert went out and 198 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2011-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2843 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2011-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2843 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
1042 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
336 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

488 
WUUS51 KPHI 011656
SVRPHI
PAC025-089-011815-
/O.NEW.KPHI.SV.W.0076.110601T1656Z-110601T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1256 PM EDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  NORTHERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF MOUNT POCONO...

* UNTIL 215 PM EDT

* AT 1249 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 15
  MILES NORTHWEST OF WHITE HAVEN...OR 10 MILES SOUTHWEST OF
  WILKES-BARRE...AND MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  6 MILES NORTH OF BLAKESLEE AROUND 130 PM EDT...
  GOULDSBORO STATE PARK AND POCONO PINES AROUND 145 PM EDT...
  TOBYHANNA AROUND 150 PM EDT...
  MOUNT POCONO AROUND 155 PM EDT...
  CANADENSIS...MOUNTAINHOME...PARADISE VALLEY AND 6 MILES NORTH OF
  ALPINE MOUNTAIN AROUND 205 PM EDT...
  SKYTOP AROUND 210 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4125 7513 4116 7516 4115 7511 4101 7518
      4105 7578 4111 7576 4114 7570 4113 7564
      4121 7557 4125 7550 4125 7531 4126 7515
TIME...MOT...LOC 1656Z 266DEG 27KT 4116 7596

$$

MPD
2 follow-up statements
835 
WWUS51 KPHI 011734
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
134 PM EDT WED JUN 1 2011

PAC025-089-011815-
/O.CON.KPHI.SV.W.0076.000000T0000Z-110601T1815Z/
CARBON PA-MONROE PA-
134 PM EDT WED JUN 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR NORTHERN MONROE AND NORTH CENTRAL CARBON COUNTIES...

AT 130 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR BLAKESLEE...OR 13 MILES SOUTHEAST OF WILKES-BARRE...
MOVING EAST AT 30 MPH.

THERE ARE INDICATIONS THAT THIS STORM MAY HAVE WEAKENED SOME BUT 
CONDITIONS STILL FAVOR STRENGTHENING AND POSSIBLE SEVERE WEATHER. 

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BLAKESLEE AND LAKE HARMONY BY 140 PM EDT...
  POCONO PINES BY 150 PM EDT...
  TOBYHANNA AND GOULDSBORO STATE PARK BY 155 PM EDT...
  MOUNT POCONO BY 200 PM EDT...
  MOUNTAINHOME...PARADISE VALLEY...CANADENSIS AND ALPINE MOUNTAIN BY
  210 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4125 7513 4116 7516 4115 7511 4101 7518
      4105 7578 4111 7576 4114 7570 4113 7564
      4121 7557 4125 7550 4125 7531 4126 7515
TIME...MOT...LOC 1731Z 266DEG 27KT 4113 7567

$$

AMC
609 
WWUS51 KPHI 011756
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
156 PM EDT WED JUN 1 2011

PAC025-089-011805-
/O.CAN.KPHI.SV.W.0076.000000T0000Z-110601T1815Z/
CARBON PA-MONROE PA-
156 PM EDT WED JUN 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MONROE AND NORTH
CENTRAL CARBON COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED OVER MONROE COUNTY 
AND NO LONGER POSES A SEVERE WEATHER THREAT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4125 7513 4116 7516 4115 7511 4101 7518
      4105 7578 4111 7576 4114 7570 4113 7564
      4121 7557 4125 7550 4125 7531 4126 7515
TIME...MOT...LOC 1755Z 266DEG 27KT 4114 7543

$$

AMC

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 1, 1:57 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe, Northampton63 min
Jun 1, 2:42 PM EDTSevere Thunderstorm WarningPHIBerks, Chester, Lehigh52 min
Jun 1, 3:08 PM EDTSevere Thunderstorm WarningPHIBucks, Lehigh, Northampton16 min
Jun 1, 4:15 PM EDTSevere Thunderstorm WarningPHIBucks45 min
Jun 1, 4:55 PM EDTSevere Thunderstorm WarningPHIChester26 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.